--!strict
--!optimize 2
--!native

local Players = game:GetService("Players")
local RunService = game:GetService("RunService")

local RunContext = RunService:IsServer() and "Server" or "Client"

local Registry = require("../Modules/Registry")
local Enums = require("../Enums")
local Types = require("../Types")

local Processor = RunService:IsServer() and require("../Process/Server") or require("../Process/Client")
	:: Types.ClientProcesser | Types.ServerProcesser
local Function = {
	__index = function(self: Types.Function, index)
		if RunContext == "Server" then
			if index == "Invoke" then
				error("can not use Invoke on server")
			end
		elseif RunContext == "Client" then
			if index == "InvokeTo" then
				error("can not use InvokeTo on client")
			end
		end
		
		return ({
			Invoke = function(data: any)
				return Processor.Invoke(self, data)
			end,
			InvokeTo = function(user: Player, data: any)
				return Processor.InvokeTo(self, user, data)
			end,
			Listen = function(listener)
				self._listener = listener
			end,
		})[index]
	end,
}

local PacketID = 0
return function(request: Types.DataTypeInterface, response: Types.DataTypeInterface)
	local self = setmetatable({
		_request = request,
		_response = response,
		_listener = nil,
		_packetid = PacketID,
		_method = "Function"
	}, Function) :: Types.Function
	
	Registry.set("Function", PacketID, self)
	PacketID+=1
	return self
end